Table 1: Percentage of newborn pups attaching to nipples of anesthetized dams ( per condition). *P < .05

Group % attached Vaginal birth (22°C) 90 Cesarean birth    Room (22°C)     Compressed 89*   Noncompressed 44  Nest (33°C)     Compressed 56   Noncompressed 67  Intrauterine (36°C)     Compressed 89   Noncompressed 78